// Copyright 2006 Marcus Schulte
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Copyright 2006 Marcus Schulte
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.bookie.stateful;

import java.util.Map;

import org.apache.hivemind.service.ThreadCleanupListener;
import org.apache.tapestry.engine.state.ApplicationStateManager;

/**
 * Uses Tapesty's aso mechanism to store conversation-state. Expects the aso whose name
 * is given in the c'tor to be configured properly.
 * 
 * @author Marcus Schulte
 *
 */
/**
 * @author Marcus Schulte
 *
 */
public class ConversationManagerImpl implements ConversationManager {

	private ApplicationStateManager stateManager;
	private String applicationStateObjectName;
	
	public ConversationManagerImpl( ApplicationStateManager mgr, String asoName ) {
		stateManager = mgr;
		applicationStateObjectName = asoName;
	}
	
	public Map<String, Object> getCurrentConversation() {
		Map<String, Object> c =  (Map<String, Object>) stateManager.get( applicationStateObjectName );
		return c;
	}

	public void terminateConversation() {
		Map conv = (Map) stateManager.get( applicationStateObjectName );
		
		for ( Object o : conv.values() ) {
			if ( o instanceof StateStorageClearanceListener )
				((StateStorageClearanceListener)o).clientStateCleared();
		}
		
		conv.clear();
	}

	public void pauseConversation() {
		Map conv = (Map) stateManager.get( applicationStateObjectName );
		
		for ( Object o : conv.values() ) {
			if ( o instanceof ThreadCleanupListener )
				((ThreadCleanupListener)o).threadDidCleanup();
		}
	}
}
